If you want to access the fourth chat group, there are a few things you need to do. First, open the web browser on your device and type in the URL for the chat group
Once you have done this, you will be taken to the main page. Next, click on the login link and enter your username and password. After you have logged in, you will be able to see all of the chat groups that are available
Finally, click on the group that you want to join and start chatting with other members.